199615023 has 12 divisors (see below), whose sum is σ = 299012168. Its totient is φ = 133076520.

The previous prime is 199615021. The next prime is 199615057. The reversal of 199615023 is 320516991.

199615023 is a `hidden beast` number, since 1 + 99 + 61 + 502 + 3 = 666.

It is not a de Polignac number, because 199615023 - 2¹ = 199615021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199615021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 410488 + ... + 410973.

Almost surely, 2^199615023 is an apocalyptic number.

199615023 is a deficient number, since it is larger than the sum of its proper divisors (99397145).

199615023 is an frugal number, since it uses more digits than its factorization.

199615023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821476 (or 821464 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 199615023 is about 14128.5180751557. The cubic root of 199615023 is about 584.4280801032.

The spelling of 199615023 in words is "one hundred ninety-nine million, six hundred fifteen thousand, twenty-three".